Quasi-symmetric designs and the Smith No
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A. Blokhuis; A. R. Calderbank
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Article
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1992
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Springer
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English
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We obtain necessary conditions for the existence of a 2 -(v, k, X) design, for which the block intersection sizes sl, s 2 ..... s n satisfy s I ---s 2 ~ ... -Sn -m s (modpe), where p is a prime and the exponent e is odd. These conditions are obtained from restriction on the Smith Normal Form of the